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About This Document

About This Document

Purpose

This document describes the LUN copy feature of storage system , including its working principle, application
scenarios. Also, it explains how to configure and manage LUN copy. LUN copy is only supported for
LUNs (block services).

Intended Audience

This document is intended
for:

Technical support engineers

Maintenance engineers

Symbol Conventions

The symbols that may be found
in this document are defined as follows.

Symbol

Description

Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss, performance
deterioration, or unanticipated results.

NOTICE is used to address
practices not related to personal injury.

Calls attention to important information, best practices
and tips.

NOTE is used to address information not related to
personal injury, equipment damage, and environment deterioration.

Change History

Changes between document issues are cumulative. The latest document
issue contains all the changes made in previous issues.

Issue 11 (2018-05-30)

This issue is the eleventh official release. The updates are as
follows:

Added the case of "How Is Load Balancing Implemented
for LUN Copy Between Two Storage Arrays" to FAQ.

Issue 10 (2018-02-05)

This issue is the tenth official
release. The updates are as follows:

Optimized the descriptions
about the chapter Feature Description.

Issue 09 (2017-11-30)

This issue is the ninth official
release. The updates are as follows:

Optimized configuration
process about section Configuring LUN Copies.

Issue 08 (2017-10-30)

This is the eighth official release, which includes the following
updates:

Optimized descriptions about section Impact and Restrictions.

Issue 07 (2017-07-10)

This is the seventh official
release, which includes the following updates:

Optimized descriptions
about section Impact and Restrictions.

Issue 06 (2017-03-27)

This is the sixth official release, which includes the following
updates:

Modified the description of local and remote storage
devices in the section of Working Principle.

Updated the operation
procedure in the section of (Optional) Configuring a Logical Connection
Between the Local Storage System and Remote Storage System.

Issue 05 (2016-11-20)

This is the fifth official release,
which includes the following updates:

Modified the description
of impact and restrictions.

Synchronizes some software interface
changes.

Issue 04 (2016-07-25)

This is the fourth
official release, which includes the following updates:

Synchronizes
some software interface changes.

Issue 03 (2016-04-30)

This is the third official release, which includes the following
updates:

Modified the description of impact and restrictions.

Added the section "Configuring Logical Connection Between the
Local Storage System and Heterogeneous Storage System".

Issue 02 (2015-12-10)

This is the second official release,
which includes the following updates: